D'OOGE LATIN COURSE
D'Ooge's Latin for Beginners is a popular text, and many students like its more grammar-heavy approach.
TEXTKIT GREEK AND LATIN FORUM
There is a sub-forum for users of D'Ooge on TEXTKIT - a Greek and Latin Forum that I highly recommend that you sign up to. There are also subfora for students using Moreland and Fleischer and Wheelock, and general posting sections for students. Textkit is an ideal place to post your grammar questions.